# Topics vs knockOut Study

The clearest difference is iOS requirement: knockOut Study at 15.5 against Topics's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Topics sells 3 in-app purchases, starting at $14.99 per month and knockOut Study sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Topics | knockOut Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/topics-learn-a-language/id6479612893/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Freemium | — |
| Size | 45 MB | 306 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Topics, Inc](https://appshunter.io/developer/1736549571) | [MAKSYM KHAMAD](https://appshunter.io/developer/1823494759) |

## What reviewers say

### Topics

[App page](https://appshunter.io/ios/app/topics-learn-a-language/id6479612893)

This app helps intermediate language learners practice with real-world content. It uses AI to adapt stories and news to your level, making authentic material understandable and enjoyable. Focus on specific language skills through engaging topics without the frustration of complex texts.

**Highlights:** Adapted stories and news, AI content rewriting, Smart word review, Focused skill improvement, Multiple languages supported

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| YouPlus Monthly Subscription | $14.99 | per month |
| Monthly Unlimited Subscription | $17.99 | per month |
| Yearly Unlimited Subscription | $119.99 | per year |


### knockOut Study

[App page](https://appshunter.io/ios/app/knockout-study/id6747940497)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| knockOut Pro Monthly | $8.99 | per month |
| knockOut Pro Monthly | $73.90 | per year |
| knockOut Pro Life | $99.99 | one-time |


## Frequently asked questions

### Is Topics free?

Topics is free to download, with in-app purchases available.

### Is knockOut Study free?

knockOut Study is free to download, with in-app purchases available.

### Do Topics or knockOut Study have ads?

Neither Topics nor knockOut Study shows ads.

### Which is updated more often, Topics or knockOut Study?

Topics ships an update every 5 days, and knockOut Study every 5 days. Most recently, Topics was updated on October 2, 2026 and knockOut Study on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*